Add me to myself, and I remain unchanged. Multiply me by myself, and I remain unchanged. Subtract me from myself, and I remain unchanged. What number am I?
0
Zero added to zero is zero, zero multiplied by zero is zero, and zero minus zero is zero.
About this riddle
Math riddles hide a calculation inside a short story. Pull out the numbers, work out what is being asked, and watch for a trick such as a unit change.
Difficulty: Easy. More like this: Math riddles with answers or try Target 24 for a different kind of puzzle.
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